The engine compartment fuse box is used internally, if it is a wiring problem inside the fuse box that is preventing it from functioning properly, then the engine compartment fuse box will need to be replaced. If it is just a blown fuse block or relay on the fuse box, then only the fuse block or relay needs to be replaced.
Installation Instructions: No installation tools or instructions included. Please refer to the installation video on video site and carefully follow the steps to avoid incorrect installation.
SERVICE GURANTEE- Package include: 1PCS x Engine Control Unit Fuse Box. If it fails on your vehicle, feel free to contact us any time.